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Visualizza Versione Completa : Monster meso and wall cloud near Portogruaro, June 7th 2009



old_SLO-chaser
10-06-2009, 22:58
Still pretty sheary and unstable conditions in place after an outbreak a day ago and few more severe storms were expected in Friuli region. I noticed a wild storm forming on radar NW of Pordenone and soon went towards it. It was clear this is going into supercell mode, its motion vector was inclined away from the main flow. Meanwhile driving towards Palmanova, a nice looking towers were on going towards western Slovenia with a cute wavy stratus deck undulating over...

http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk2.jpg

http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk3.jpg

I couldn't see my targeting storm from my home, but I already noticed it near Palmanova. Surprisedly it was going pretty slow and that was the best for calm approaching towards it. I dropped SW towards Latisana and Portogruaro via A4. First stop near Porpetto cleary shows its well organized structure with sharp updraft towers and anvil aloft, weakly striated structure visible as well. A closer look showed there is a monster LL mesocyclone with wall cloud beneath it... and I wasn't loosing time here for long...

http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk4.jpg

http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk5.jpg

It was becoming more and more impressive when I was already near Latisana... WOW what a low wall cloud monster, massive inflow tail and FFD way away from the updraft tower... perfect!

http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk6.jpg

http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk8.jpg

http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk9.jpg

Closer look into the rapidly blasting inflow tail into the wall cloud...

http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk10.jpg

I went a bit further, but had no reason to hurry now as it was really slow and in that moment still well NW of Portogruaro where I planned to exit the A4. These three image sequence nicely show how spectacular the whole structure was... first the whole system, then mesocyclone zoom and again insanely low level inflow tail close-up...

http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk13.jpg

http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk12.jpg

http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk11.jpg

Oh man, if only such storm would have been formed a day before in that incredible LL shear and lower LCL heights... that would easily drop a tube onto the ground. Anyways, enough of utopia... have had LL winds/shear as they were there, weak to moderate according to 12z Udine skew-t. I moved forward for a few kms and wall cloud there was actually even lower than it was before... I couldn't see the ground due to a bit more vegetation, but definatelly it was dragged almost on the ground! Again zooming in...

http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk14.jpg

http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk16.jpg

http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk15.jpg

I was already close to Portogruaro exit in the next minutes and took this shot just before I went off the A4...

http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk17.jpg

Two photos taken at Portogruaro exit... I was right under the meso and when I stopped for a minute, I could already hear a large hail (reported near 5cm in diameter) roaring to my NW. Soon it started with large drops and I rapidly moved south into the city and then turned E on the road towards Latisana.

http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk18.jpg

http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk19.jpg

I wanted to go a bit further east, just to be well in front of the meso with better view over the whole monster. I couldn't see the meso in the mirror, also traffic was terrible there... anyways I stopped in a good open field and jumped out... holy s**t there was a majestic mesocyclone with spectacular striations and robust rain free base... I was speechless, mothership beauty!! Was just drolling over the structure and let the photos say it all...

http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk20.jpg

http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk22.jpg

http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk21.jpg

I stayed there for a few minutes while noticed the mesocyclone wants to occlude soon, so I moved a bit more to the east to take few more pictures before it collapses. Still pretty beautiful striated meso, but well seen it was collapsing rapidly... it then got more outflow dominant and I say bye bye to my baby.

http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk24.jpg

I then noticed few more cells firing along its outflow boundary convergence with sea breeze in the back and intercepted them a bit east of Portogruaro. For some time this new cell was was trying with a weak mesocyclone, but never generated a strong wall cloud... it was more an outflow dominant storm trough its whole cycle, but colors were amazing. I took a few shots of its structure...

http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk26.jpg

http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk28.jpg

http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk27.jpg

About 30min later it was somehow trying to organize again, infow tail/clouds were rapidly taking place... looked like it was trying to cycle a bit and actually it made it further north of me, but I wasn't too impressed and gave up with it. Also I wasn't expecting much afterall, as the first monster supercell well mixed and cooled the air, so the warm juice was gone.

http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk30.jpg

At sunset a nice tower poped up just west of me, nothing serious... but colors were cool...

http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk31.jpg

I call it the end of day, though I saw a new cell firing more in the back. I jumped again onto A4 in Latisana towards home and had a clear view over that isolated cell it the back. Surprisedly it was working on the meso and wall cloud. Nicely defined also with an inflow tail forming... just a few more shots and the day was completed.

http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk32.jpg

http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk33.jpg

http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk34.jpg

More photos can bee found here: http://www.weather-photos.net/gallery/thumbnails.php?album=269

Happy with the evolution, got another 3 supercells and counting 9 supercells with 2 funnels in 24 hrs... pretty wild weekend for our regions... once again, Friuli simply rocks! :smoke :ciauz1

old_Nik
11-06-2009, 00:02
spettacolari :inchino ;el)) ;10)

direi che cè un accenno di instabilità di Kelvin-Helmholtz in primo piano in basso:
http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk3.jpg

old_bugimeteo
11-06-2009, 07:24
;el)) ;el)) ;el)) ;el)) ;el)) ;el)) :oooh :oooh :oooh :oooh :oooh :oooh :oooh ;el)) ;el)) ;el)) ;el)) ;el)) ;el)) ;el)) ;el)) ;el)) ;el))

Meso spettacolooooooooooooooo....... ;el)) ;el)) ;el))

old_Bufera87
11-06-2009, 09:09
porca............... da togliere il fiato queste foto!! in particolare la formazione a disco del meso... :inchino :inchino :inchino :inchino :inchino :inchino :oooh :oooh :oooh

old_Manghi
11-06-2009, 09:49
Spettacolo come sempre... :inchino :inchino :inchino ;el)) ;el)) ;el)) :oooh :oooh :oooh

the master
11-06-2009, 11:54
:oooh :oooh :oooh :oooh :oooh
Che spettacolo!!! :inchino :inchino :inchino

Maufen
12-06-2009, 08:54
Le foto di Marko sono sempre S-P-E-T-T-A-C-O-L-A-R-I!!!!!
:inchino :inchino

AlealeTN
12-06-2009, 14:16
Molto belle...spettacolo!

Alipluto
12-06-2009, 21:12
marko! :inchino ;10) :ciauz1

Gigi600
14-06-2009, 19:25
:inchino :inchino

old_Barnaba
15-06-2009, 07:53
Very impressive photos and clouds. :inchino

old_Barnaba
15-06-2009, 07:59
spettacolari :inchino ;el)) ;10) direi che cè un accenno di instabilità di Kelvin-Helmholtz in primo piano in basso: [...]

Sembrerebbe proprio di sì !

Particolare: http://img41.imageshack.us/img41/5488/81306783.jpg (http://www.postimage.org/)

Ora però bisognerebe capire di che genere è la nube dove si apprezza la turbolenza.
Saluti

old_Albert0
15-06-2009, 15:20
spettacolari :inchino ;el)) ;10)

direi che cè un accenno di instabilità di Kelvin-Helmholtz in primo piano in basso:
http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk3.jpg


Chiedo a Marko di mettere un ingrandimento del particolare.

old_SLO-chaser
15-06-2009, 15:24
spettacolari :inchino ;el)) ;10)

direi che cè un accenno di instabilità di Kelvin-Helmholtz in primo piano in basso:
http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk3.jpg


Chiedo a Marko di mettere un ingrandimento del particolare.

OK I'll do it today... :ciauz1

old_SLO-chaser
15-06-2009, 17:07
Chiedo a Marko di mettere un ingrandimento del particolare.

OK I'll do it today... :ciauz1

Here you go... zoom in into the K-H waves...

http://www.weather-photos.net/gallery/albums/userpics/10001/07_06_2009mk35.jpg

:ciauz1

old_Nik
15-06-2009, 20:38
nice! ;10) ;10) :up

old_Barnaba
16-06-2009, 08:50
Here you go... zoom in into the K-H waves...

:ciauz1

But now: what is the name of this cloud ? Possibile "Stratocumulus lenticularis K-H" ? :pensieroso I don't think the cloud can be considered like "cumulonimbogenitus" because it was outside of the TS. :ciauz1

old_Fitti
16-06-2009, 10:04
what is the name of this cloud ? Possibile "Stratocumulus lenticularis K-H" ? :pensieroso I don't think the cloud can be considered like "cumulonimbogenitus" because it was outside of the TS. :ciauz1

yes I think so too, Stratocumulus lenticularis K-H...a very rare cloud and the evidence that we can find KH waves on every kind of clouds ;10)